Currently, most of the costs associated with operating and maintaining the roadway infrastructure are paid for
by revenue collected from the motor fuel use tax. As fuel efficiency and the use of alternative fuel vehicles
increases, alternatives to this funding method must be considered. One such alternative is to assess mileage based
user fees (MBUF) based on the vehicle miles traveled (VMT) aggregated within the predetermined geographic
areas, or travel zones, in which the VMT is generated. Most of the systems capable of this use Global Positioning
Systems (GPS). However, GPS has issues with public perception, commonly associated with unwanted monitoring
or tracking and is thus considered an invasion of privacy.

The method proposed here utilizes cellular assignment, which is capable of determining a vehicle's current
travel zone, but is incapable of determining a vehicle's precise location, thus better preserving user privacy. This is
accomplished with a k-nearest neighbors (KNN) machine learning algorithm focused on the boundary of such
travel zones.

The work described here focuses on the design and evaluation of algorithms and methods that when combined,
would enable such a system. The primary experiment performed evaluates the accuracy of the algorithm at sample
boundaries in and around the commercial business district of Minneapolis, Minnesota. The results show that with
the training data available, the algorithm can correctly detect when a vehicle crosses a boundary to within 2 city
blocks, or roughly 200 meters, and is thus capable of assigning the VMT to the appropriate zone. The findings
imply that a cellular-based VMT system may successfully aggregate VMT by predetermined geographic travel
zones without infringing on the drivers' privacy.